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Genetic mapping of stem rust resistance gene Sr13 in tetraploid wheat ( Triticum turgidum ssp. durum L.).

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Title: Genetic mapping of stem rust resistance gene Sr13 in tetraploid wheat ( Triticum turgidum ssp. durum L.).
Authors: Simons, Kristin1, Abate, Zewdie2, Chao, Shiaoman1 shiaoman.chao@ars.usda.gov, Zhang, Wenjun2, Rouse, Matt3, Jin, Yue, Elias, Elias4, Dubcovsky, Jorge2
Source: Theoretical & Applied Genetics. Feb2011, Vol. 122 Issue 3, p649-658. 10p. 1 Black and White Photograph, 4 Charts, 1 Graph.
Subjects: Wheat disease & pest resistance, Puccinia graminis, Wheat varieties, Plant gene mapping, Genetics of disease resistance of plants, Genetic markers, Plant chromosomes
Abstract: Wheat stem rust caused by Puccinia graminis f. sp. tritici, can cause significant yield losses. To combat the disease, breeders have deployed resistance genes both individually and in combinations to increase resistance durability. A new race, TTKSK (Ug99), identified in Uganda in 1999 is virulent on most of the resistance genes currently deployed, and is rapidly spreading to other regions of the world. It is therefore important to identify, map, and deploy resistance genes that are still effective against TTKSK. One of these resistance genes, Sr13, was previously assigned to the long arm of chromosome 6A, but its precise map location was not known. In this study, the genome location of Sr13 was determined in four tetraploid wheat ( T. turgidum ssp. durum) mapping populations involving the TTKSK resistant varieties Kronos, Kofa, Medora and Sceptre. Our results showed that resistance was linked to common molecular markers in all four populations, suggesting that these durum lines carry the same resistance gene. Based on its chromosome location and infection types against different races of stem rust, this gene is postulated to be Sr13. Sr13 was mapped within a 1.2-2.8 cM interval (depending on the mapping population) between EST markers CD926040 and BE471213, which corresponds to a 285-kb region in rice chromosome 2, and a 3.1-Mb region in Brachypodium chromosome 3. These maps will be the foundation for developing high-density maps, identifying diagnostic markers, and positional cloning of Sr13. [ABSTRACT FROM AUTHOR]
Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Genetic mapping of stem rust resistance gene Sr13 in tetraploid wheat ( Triticum turgidum ssp. durum L.).
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  Data: <searchLink fieldCode="AR" term="%22Simons%2C+Kristin%22">Simons, Kristin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Abate%2C+Zewdie%22">Abate, Zewdie</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chao%2C+Shiaoman%22">Chao, Shiaoman</searchLink><relatesTo>1</relatesTo><i> shiaoman.chao@ars.usda.gov</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Wenjun%22">Zhang, Wenjun</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Rouse%2C+Matt%22">Rouse, Matt</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Jin%2C+Yue%22">Jin, Yue</searchLink><br /><searchLink fieldCode="AR" term="%22Elias%2C+Elias%22">Elias, Elias</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Dubcovsky%2C+Jorge%22">Dubcovsky, Jorge</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Theoretical+%26+Applied+Genetics%22">Theoretical & Applied Genetics</searchLink>. Feb2011, Vol. 122 Issue 3, p649-658. 10p. 1 Black and White Photograph, 4 Charts, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22Wheat+disease+%26+pest+resistance%22">Wheat disease & pest resistance</searchLink><br /><searchLink fieldCode="DE" term="%22Puccinia+graminis%22">Puccinia graminis</searchLink><br /><searchLink fieldCode="DE" term="%22Wheat+varieties%22">Wheat varieties</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+gene+mapping%22">Plant gene mapping</searchLink><br /><searchLink fieldCode="DE" term="%22Genetics+of+disease+resistance+of+plants%22">Genetics of disease resistance of plants</searchLink><br /><searchLink fieldCode="DE" term="%22Genetic+markers%22">Genetic markers</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+chromosomes%22">Plant chromosomes</searchLink>
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  Data: Wheat stem rust caused by Puccinia graminis f. sp. tritici, can cause significant yield losses. To combat the disease, breeders have deployed resistance genes both individually and in combinations to increase resistance durability. A new race, TTKSK (Ug99), identified in Uganda in 1999 is virulent on most of the resistance genes currently deployed, and is rapidly spreading to other regions of the world. It is therefore important to identify, map, and deploy resistance genes that are still effective against TTKSK. One of these resistance genes, Sr13, was previously assigned to the long arm of chromosome 6A, but its precise map location was not known. In this study, the genome location of Sr13 was determined in four tetraploid wheat ( T. turgidum ssp. durum) mapping populations involving the TTKSK resistant varieties Kronos, Kofa, Medora and Sceptre. Our results showed that resistance was linked to common molecular markers in all four populations, suggesting that these durum lines carry the same resistance gene. Based on its chromosome location and infection types against different races of stem rust, this gene is postulated to be Sr13. Sr13 was mapped within a 1.2-2.8 cM interval (depending on the mapping population) between EST markers CD926040 and BE471213, which corresponds to a 285-kb region in rice chromosome 2, and a 3.1-Mb region in Brachypodium chromosome 3. These maps will be the foundation for developing high-density maps, identifying diagnostic markers, and positional cloning of Sr13. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – TitleFull: Genetic mapping of stem rust resistance gene Sr13 in tetraploid wheat ( Triticum turgidum ssp. durum L.).
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